objective-c - transitionWithView翻转UIView时，如何取消view的颜色变暗问题？

问题描述

想做一个类似卡牌正反面翻转的动画，使用UIView 的transitionWithView方法，会导致所翻转的view颜色变暗，如果view的背景色是白色的化，翻转时就会有个闪烁、黑色中线的问题，效果很不好，求各路大神指教···

[UIView transitionWithView:cardView duration:0.8f options:UIViewAnimationOptionTransitionFlipFromLeft animations:^{[cardView exchangeSubviewAtIndex:0 withSubviewAtIndex:1]; } completion:NULL];

问题解答

[UIView transitionFromView:self.aView toView:self.bView duration:0.5 options:UIViewAnimationOptionTransitionFlipFromLeft completion:^(BOOL finished) {// do something such as hidden or remove }];